EP1199373A1 - Agglomerate von metallurgischem Staub und Verfahren zu deren Behandlung - Google Patents
Agglomerate von metallurgischem Staub und Verfahren zu deren Behandlung Download PDFInfo
- Publication number
- EP1199373A1 EP1199373A1 EP00870232A EP00870232A EP1199373A1 EP 1199373 A1 EP1199373 A1 EP 1199373A1 EP 00870232 A EP00870232 A EP 00870232A EP 00870232 A EP00870232 A EP 00870232A EP 1199373 A1 EP1199373 A1 EP 1199373A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- zinc
- dust
- metallurgical
- agglomerated
- mixture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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- 239000000428 dust Substances 0.000 title claims abstract description 106
- 238000000034 method Methods 0.000 title claims abstract description 59
- 230000008569 process Effects 0.000 title claims description 42
- 239000011701 zinc Substances 0.000 claims abstract description 125
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 109
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 102
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 64
- 239000000203 mixture Substances 0.000 claims abstract description 61
- 239000011133 lead Substances 0.000 claims abstract description 35
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 32
- 229910052742 iron Inorganic materials 0.000 claims abstract description 32
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 31
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000000292 calcium oxide Substances 0.000 claims abstract description 16
- 229910000616 Ferromanganese Inorganic materials 0.000 claims abstract description 15
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052751 metal Inorganic materials 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 14
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 13
- 239000011230 binding agent Substances 0.000 claims abstract description 11
- -1 ferrous metals Chemical class 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 claims abstract description 6
- 150000002611 lead compounds Chemical class 0.000 claims abstract description 4
- 239000000571 coke Substances 0.000 claims description 30
- 229910052717 sulfur Inorganic materials 0.000 claims description 10
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 8
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 7
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 7
- 239000000920 calcium hydroxide Substances 0.000 claims description 7
- 235000011116 calcium hydroxide Nutrition 0.000 claims description 7
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 7
- 235000013379 molasses Nutrition 0.000 claims description 7
- 239000002893 slag Substances 0.000 claims description 7
- 239000003517 fume Substances 0.000 claims description 6
- 239000011593 sulfur Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 4
- 239000006253 pitch coke Substances 0.000 claims description 4
- 239000003923 scrap metal Substances 0.000 claims description 4
- 239000000779 smoke Substances 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 235000009508 confectionery Nutrition 0.000 claims description 3
- 239000000155 melt Substances 0.000 claims description 3
- 239000003610 charcoal Substances 0.000 claims description 2
- 239000011335 coal coke Substances 0.000 claims description 2
- 239000008188 pellet Substances 0.000 claims description 2
- 239000002006 petroleum coke Substances 0.000 claims description 2
- 229910052681 coesite Inorganic materials 0.000 abstract description 3
- 229910052906 cristobalite Inorganic materials 0.000 abstract description 3
- 229910052682 stishovite Inorganic materials 0.000 abstract description 3
- 229910052905 tridymite Inorganic materials 0.000 abstract description 3
- 229910000464 lead oxide Inorganic materials 0.000 abstract description 2
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 13
- 229910001018 Cast iron Inorganic materials 0.000 description 12
- 238000002347 injection Methods 0.000 description 10
- 239000007924 injection Substances 0.000 description 10
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 9
- 238000004458 analytical method Methods 0.000 description 9
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 9
- 229910052745 lead Inorganic materials 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 239000011572 manganese Substances 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 238000004064 recycling Methods 0.000 description 6
- 229910000805 Pig iron Inorganic materials 0.000 description 5
- 241001080024 Telles Species 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 239000004576 sand Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 235000014692 zinc oxide Nutrition 0.000 description 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 4
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 4
- 235000011941 Tilia x europaea Nutrition 0.000 description 4
- 229910052793 cadmium Inorganic materials 0.000 description 4
- 239000004615 ingredient Substances 0.000 description 4
- 239000004571 lime Substances 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 239000011787 zinc oxide Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000008033 biological extinction Effects 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 238000009854 hydrometallurgy Methods 0.000 description 3
- 229910052748 manganese Inorganic materials 0.000 description 3
- VASIZKWUTCETSD-UHFFFAOYSA-N manganese(II) oxide Inorganic materials [Mn]=O VASIZKWUTCETSD-UHFFFAOYSA-N 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 231100000331 toxic Toxicity 0.000 description 3
- 230000002588 toxic effect Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 240000008042 Zea mays Species 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 239000002956 ash Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 2
- 229910052729 chemical element Inorganic materials 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 230000001186 cumulative effect Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 235000000396 iron Nutrition 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000009853 pyrometallurgy Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229910001021 Ferroalloy Inorganic materials 0.000 description 1
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 240000000111 Saccharum officinarum Species 0.000 description 1
- 235000007201 Saccharum officinarum Nutrition 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 1
- 229930006000 Sucrose Natural products 0.000 description 1
- 235000009754 Vitis X bourquina Nutrition 0.000 description 1
- 235000012333 Vitis X labruscana Nutrition 0.000 description 1
- 240000006365 Vitis vinifera Species 0.000 description 1
- 235000014787 Vitis vinifera Nutrition 0.000 description 1
- 239000004110 Zinc silicate Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000003416 augmentation Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 229940082150 encore Drugs 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 235000013980 iron oxide Nutrition 0.000 description 1
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 1
- 238000010169 landfilling Methods 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229960004793 sucrose Drugs 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- XSMMCTCMFDWXIX-UHFFFAOYSA-N zinc silicate Chemical compound [Zn+2].[O-][Si]([O-])=O XSMMCTCMFDWXIX-UHFFFAOYSA-N 0.000 description 1
- 235000019352 zinc silicate Nutrition 0.000 description 1
- RNWHGQJWIACOKP-UHFFFAOYSA-N zinc;oxygen(2-) Chemical class [O-2].[Zn+2] RNWHGQJWIACOKP-UHFFFAOYSA-N 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/02—Working-up flue dust
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/242—Binding; Briquetting ; Granulating with binders
- C22B1/244—Binding; Briquetting ; Granulating with binders organic
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/242—Binding; Briquetting ; Granulating with binders
- C22B1/244—Binding; Briquetting ; Granulating with binders organic
- C22B1/245—Binding; Briquetting ; Granulating with binders organic with carbonaceous material for the production of coked agglomerates
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B19/00—Obtaining zinc or zinc oxide
- C22B19/30—Obtaining zinc or zinc oxide from metallic residues or scraps
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Definitions
- the present invention relates to elements agglomerates comprising metallurgical dust and a method of recycling of this metallurgical dust.
- metallurgical dust should be understood as covering not only “dust” proper as it is collected, for example in bag filters during dry dust removal from cupola fumes or electric oven, but also the “sludge” as obtained during wet dusting of metallurgical fumes.
- hydrometallurgical processes For the treatment of metallurgical dust, we have proposed and used hydrometallurgical processes. Some of the problems that arise from such processes are caused by the fact that in the metallurgical dust to be treated, a substantial part of the zinc is found in the form of "complex oxides" such as ferrite zinc, zinc silicate, etc., which is very difficult to economically separate zinc by hydrometallurgical processes. For this reason and others the recovery rate of zinc by these processes is generally weak. These hydrometallurgical processes produce besides large quantities of toxic effluents which one can hardly get rid (even after prior treatment) without this does not pose a serious risk of environmental pollution.
- Dust recycling processes in a cupola essentially fall into two groups, depending on whether one proceeds to the reinjection of dust by the nozzles or to the re-charging by the gueulard (see on this subject "Foundry-Founder of Today” 175 - May 1998, p. 18-41).
- the object of the present invention is to provide self-fusing and self-reducing agglomerated elements, generally obtained from dust from electric steelworks, which can be used for the recovery, on the one hand, of a quality cast iron commercial and, on the other hand, dust with high zinc content likely to be valued.
- the invention therefore also provides a method of treatment of these agglomerated elements making it possible to treat metallurgical dust containing in particular iron and zinc of so as to produce, at moderate cost, metallurgical dust having significantly higher zinc content and quality cast iron commercial.
- the invention also aims to provide such a method which can in particular be executed in a standard cupola.
- the invention more particularly aims to provide such a process for obtaining metallurgical dust having a zinc content of almost 50%, or even more than 50%, by treating metallurgical dust with a zinc content already relatively high (for example between 15 and 20%) such that certain dust from electric steel works.
- the metallurgical dust incorporated in the agglomerated elements can be of diverse origin and one can possibly incorporate a mixture of dust into these agglomerates metallurgical from different origins.
- this dust metallurgical materials consist in whole or in part of steelworks dust electric.
- the metallurgical dust incorporated in agglomerated elements generally contain from 5 to 40% by weight of zinc, usually 10 to 40% by weight of zinc, and preferably 15 to 30% by weight of zinc.
- metallurgical dust contains the following chemical elements: Fe, Pb, Zn, MnO, S, C, SiO 2 , CaO, MgO and Cl; and preferably Fe, Zn, Pb, MnO and CaO. Good results have been obtained with metallurgical dust containing at least zinc, iron and lead and also gangue elements such as CaO, SiO 2 , Al 2 O 3 , K 2 O and Na 2 O.
- the particle size of the carbon fines incorporated in the agglomerated elements is advantageously less than 3 mm, and preferably less than 1.5 mm.
- Carbon fines incorporated into the elements agglomerates can be of different types and we can optionally make use of mixtures of two or more types of carbon fines different.
- these carbon fines can in particular include petroleum coke, pitch coke, charcoal, coal coke or mixtures of these materials.
- the reactivity, the particle size and the quantity of fines carbon used should preferably be such that at 1200 ° C, at least 90%, but preferably 95% of the zinc and lead are volatilized and at least 95% of the iron present in the iron oxides is reduced to the state of metal.
- the sulfur content of the carbon fines used to be as low as possible to limit the content in sulfur from the pig iron produced, and that the carbon content of these fines of carbon is as high as possible to limit the presence of water and of ashes.
- the agglomerated elements can be put in a metallurgical furnace (for example, put in the mouth of a cupola) without being substantially disaggregated. It is necessary, in indeed, that these agglomerated elements are not finely fragmented as a result of the shocks they undergo during this charging and that little or no elements break.
- the binder incorporated in the mixture is low in sulfur, so as to limit the sulfur content of the cast iron produced.
- the binder includes candy molasses and possibly slaked lime.
- the mixture advantageously comprises from 9 to 13% by weight, and preferably from 10 to 12% by weight (expressed as material dry) candy molasses (such as sugar cane molasses), based on the weight of dry matter in the mixture.
- candy molasses such as sugar cane molasses
- the mixture comprises 3 to 6% by weight and preferably from 4 to 5% by weight of slaked lime, relative to the weight of material dry the mixture.
- the silica incorporated in the mixture preferably comprises silica sand.
- the SiO 2 / CaO weight ratio of the mixture is between 0.5: 1 and 2: 1 and preferably between 0.85: 1 and 1.3: 1. This SiO 2 / CaO weight ratio relates to the total mixture (and not only the Ca (OH) 2 and the silica sand incorporated in the mixture).
- ingredients other than slaked lime and siliceous sand contain silica and calcium (in particular metallurgical dust, carbon fines and ferromanganese). ).
- the mixture contains 0.6 to 1.2% by weight and preferably 0.8 to 1% by weight of ferromanganese.
- the ferromanganese contains the following chemical elements: Fe, Mn, Si, S, C, Cr, Cu, Pb and Zn; and preferably Fe and Mn.
- This ferromanganese preferably contains 74 to 79% Mn and has a particle size between 0 and 5 mm and preferably between 0 and 3 mm.
- the volume of the agglomerated elements is advantageously between 30 and 130 cm 3 and preferably between 50 and 90 cm 3 .
- the agglomerated elements can take various forms. Thus, when the invention was developed, in particular cylindrical agglomerated elements with a diameter of 5 cm and a height of about 3 cm were used, obtained by means of a press piston.
- the agglomerated elements of the invention are in the form of pellets, briquettes, cylinders or balls each having a volume between 30 and 130 cm 3 , and preferably between 50 and 90 cm 3 .
- agglomerated elements of the invention is in the form of perforated or hollowed out briquettes.
- the volume of these balls is preferably between 60 and 80 cm 3 , for example around 70 cm 3 .
- the residence time of the material in the cupola is relatively short: around 60 to 90 minutes. So that the volatilization of zinc and lead reaches 95% at 1200 ° C, the heart of the ball as well as its surface reach this temperature in a time compatible with the time taken by the ball to reach the 1200 ° C zone, in the cupola, about 30 to 40 minutes. Through elsewhere, the balls cannot be too small so as not to disturb the permeability of the charge to gas.
- oven dust can be treated (in the form of agglomerated elements according to the invention) in the electric oven itself.
- the process can be carried out by loading in the grape furnace, in addition to the agglomerated elements and coke.
- the ratio can be varied in large proportions between the weight loads of agglomerated elements and the loads weight of machine-guns in the oven.
- This report can be chosen taking into account several factors, and in particular the zinc content of metallurgical dust to be treated, the zinc content that one wishes to achieve in the dust produced by the process, of the quality of the cast iron wishes to produce, the type of metallurgical furnace used, etc.
- the present invention also relates to elements agglomerates as defined above, i.e. the elements agglomerates which are used in the process according to the invention.
- the present invention also relates to a cupola, oven metallurgical suitable for carrying out the process as described above, comprising bag filter extraction means in the zinc rich dust gas circuit.
- the invention relates in particular to a metallurgical furnace, such that in particular a cupola, suitable for carrying out the process described above.
- This cupola includes a recovery facility for dust from the gas circuit by bag filter.
- the main advantage of this cupola oven lies in its capacity greater than that used conventionally when such agglomerated elements are not recycled, seen increasing the volume of dust.
- Electric arc furnace dust having the following chemical characteristics: % on dry H 2 O% Fe Pb Zn MnO S VS SiO 2 CaO MgO Cl 40.99 1.22 18.63 4.20 0.51 0.56 2.69 4.09 1.52 0.69 0.05
- Pitch coke fines (particle size ⁇ 3 mm) having the following characteristics: VS (%) S (%) Mast. flight. (%) Ash (%) H 2 O (%) 94 0.25 2 0.7 0.7
- Cane sugar molasses Dry matter content 80% S content 0.5%
- Fine sand grain size ⁇ 2 mm.
- This mixture in which the ingredients are uniformly distributed is then transformed into balls by means of a press tangential wheels.
- the volume of these balls is approximately 70 cm 3 .
- the mechanical resistance of the balls which is already good upon release from the press, is further improved after one or two days storage.
- the agglomerated elements described above are treated in a cold wind cupola equipped with three water-cooled nozzles.
- the cupola has a diameter of about 90 cm.
- the wind flow (which can be enriched in oxygen) is 50 to 70 m 3 / min and the melt flow is of the order of 5 t / h.
- the cast iron produced is a gray lamellar cast iron giving approximately the following analysis: VS (%) Yes (%) Mn (%) P (%) S (%) 3 1.5 0.5 1 ⁇ 0.15
- the zinc balance thus established is as follows: hours Zn introduced (kg) Zn extract (kg) Zn introduced “cumulative” (kg) Zn "cumulative” extract (kg) Zn delayed (kg) 6-7 177.8 0 177.8 0 177.8 7-8 197.4 3.2 375.2 3.2 372 8-9 204.5 47.1 579.7 50.3 529.4 9-10 215.8 83.6 795.5 133.9 661.6 10-11 201.7 79 997.2 212.9 784.3 11-12 198.6 175.4 1195.8 388.3 807.5 12-13 45.8 119 1241.6 507.3 734.3 13-14 0 313.8 1241.6 821 420.6 14-15 0 174.2 1241.6 995.3 246.3 15-16 0 157 1241.6 1152.3 89.3 16-18 0 91.4 1241.6 1243.7 0 Note : For the two hours between Hour 16 and Hour 18, the quantities of "Zn extracted" have been added to the balance sheet.
- the agglomerated elements (balls) are manufactured as described in Example 1 and their composition is identical.
- the cupola used is the same as that used for Example 1.
- agglomerated elements (balls) manufactured as described in point A of example 1 are treated in the cupola described in point B of Example 1.
- the zinc content of fine dust collected between Hour 10 and Hour 16 is on average greater than 50%. Such dust can be sold for recovery by a zinc refiner.
- the coarser-grained dust, collected cyclones, are significantly poorer in zinc and lead than fines, and by cons significantly richer in iron, carbon and lime. They can be recycled advantageously at the agglomeration stage (manufacture of balls) as a source of iron, carbon and lime (but also zinc and lead).
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacture And Refinement Of Metals (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00870232A EP1199373A1 (de) | 2000-10-17 | 2000-10-17 | Agglomerate von metallurgischem Staub und Verfahren zu deren Behandlung |
PCT/BE2001/000181 WO2002033136A1 (fr) | 2000-10-17 | 2001-10-16 | Elements agglomeres et procede de traitement de poussieres metallurgiques |
AU2002210283A AU2002210283A1 (en) | 2000-10-17 | 2001-10-16 | Agglomerated elements and method for treating metallurgical dust |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00870232A EP1199373A1 (de) | 2000-10-17 | 2000-10-17 | Agglomerate von metallurgischem Staub und Verfahren zu deren Behandlung |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1199373A1 true EP1199373A1 (de) | 2002-04-24 |
Family
ID=8175828
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00870232A Withdrawn EP1199373A1 (de) | 2000-10-17 | 2000-10-17 | Agglomerate von metallurgischem Staub und Verfahren zu deren Behandlung |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1199373A1 (de) |
AU (1) | AU2002210283A1 (de) |
WO (1) | WO2002033136A1 (de) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1439237A1 (de) * | 2003-01-09 | 2004-07-21 | Oneder, S.A. | Verwertung von Elektrolichtbogenofenstaüben der Stahlerzeugung und so hergestellte Produkt |
WO2006133777A1 (en) * | 2005-06-13 | 2006-12-21 | Umicore | Separation of metal values in zinc leaching residues |
WO2018207131A1 (en) * | 2017-05-10 | 2018-11-15 | Sabic Global Technologies B.V. | A process for manufacturing self-reducing pellets/briquettes from bag house dust mixed with carbon to be used in steelmaking furnaces |
CN111850307A (zh) * | 2019-04-24 | 2020-10-30 | 王俊英 | 一种利用冶金固废火法熔融烟气提取锌灰的工艺方法 |
CN115786694A (zh) * | 2023-01-29 | 2023-03-14 | 中南大学 | 锌铅铜矿料的预处理方法及其应用 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2375562A1 (fr) * | 1976-12-24 | 1978-07-21 | Air Ind | Perfectionnements apportes aux installations de fonderie |
US4119455A (en) * | 1977-09-28 | 1978-10-10 | Carad, Inc. | Method of recovering iron-bearing by-product flue dust |
US4940487A (en) * | 1988-04-08 | 1990-07-10 | Voest-Alpine Stahl Donawitz Gesellschaft M.B.H. | Process for utilizing of zinc-containing metallurgical dusts and sludges |
EP0387479A1 (de) * | 1989-03-14 | 1990-09-19 | Zia Metallurgical Processes, Inc. | Verfahren und Anlage zur Rückgewinnung von NE-Metallen mittels eines Schachtofens mit kontinuierlicher Zufuhr |
US5279643A (en) * | 1992-01-17 | 1994-01-18 | Yasuo Kaneko | Process for recovering valuable metals from an iron dust |
US5728193A (en) * | 1995-05-03 | 1998-03-17 | Philip Services Corp. | Process for recovering metals from iron oxide bearing masses |
EP0960952A1 (de) * | 1998-05-27 | 1999-12-01 | Gloster N.V. | Verfahren zur Rückgewinnung von eisenoxidhaltigen Reststoffen der Stahlerzeugung durch Brikettierung |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NO170032C (no) * | 1989-12-22 | 1992-09-02 | Elkem Technology | Fremgangsmaate ved gjenvinning av sink fra sink-holdige avfallsstoffer. |
-
2000
- 2000-10-17 EP EP00870232A patent/EP1199373A1/de not_active Withdrawn
-
2001
- 2001-10-16 WO PCT/BE2001/000181 patent/WO2002033136A1/fr active Application Filing
- 2001-10-16 AU AU2002210283A patent/AU2002210283A1/en not_active Abandoned
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2375562A1 (fr) * | 1976-12-24 | 1978-07-21 | Air Ind | Perfectionnements apportes aux installations de fonderie |
US4119455A (en) * | 1977-09-28 | 1978-10-10 | Carad, Inc. | Method of recovering iron-bearing by-product flue dust |
US4940487A (en) * | 1988-04-08 | 1990-07-10 | Voest-Alpine Stahl Donawitz Gesellschaft M.B.H. | Process for utilizing of zinc-containing metallurgical dusts and sludges |
EP0387479A1 (de) * | 1989-03-14 | 1990-09-19 | Zia Metallurgical Processes, Inc. | Verfahren und Anlage zur Rückgewinnung von NE-Metallen mittels eines Schachtofens mit kontinuierlicher Zufuhr |
US5279643A (en) * | 1992-01-17 | 1994-01-18 | Yasuo Kaneko | Process for recovering valuable metals from an iron dust |
US5728193A (en) * | 1995-05-03 | 1998-03-17 | Philip Services Corp. | Process for recovering metals from iron oxide bearing masses |
EP0960952A1 (de) * | 1998-05-27 | 1999-12-01 | Gloster N.V. | Verfahren zur Rückgewinnung von eisenoxidhaltigen Reststoffen der Stahlerzeugung durch Brikettierung |
Non-Patent Citations (1)
Title |
---|
RUFFIN G ET AL: "RECYCLAGE DES POUSSIERES DE CUBILOT", FONDERIE, FONDEUR D'AUJOURD'HUI,FR,EDITIONS TECHNIQUES DES INDUSTRIES DE LA FONDERIE. PARIS, no. 175, 1 May 1998 (1998-05-01), pages 18 - 24,33-41, XP000766391, ISSN: 0249-3136 * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1439237A1 (de) * | 2003-01-09 | 2004-07-21 | Oneder, S.A. | Verwertung von Elektrolichtbogenofenstaüben der Stahlerzeugung und so hergestellte Produkt |
WO2006133777A1 (en) * | 2005-06-13 | 2006-12-21 | Umicore | Separation of metal values in zinc leaching residues |
EA013690B1 (ru) * | 2005-06-13 | 2010-06-30 | Юмикор | Извлечение ценных металлов из отходов выщелачивания цинка |
WO2018207131A1 (en) * | 2017-05-10 | 2018-11-15 | Sabic Global Technologies B.V. | A process for manufacturing self-reducing pellets/briquettes from bag house dust mixed with carbon to be used in steelmaking furnaces |
CN111850307A (zh) * | 2019-04-24 | 2020-10-30 | 王俊英 | 一种利用冶金固废火法熔融烟气提取锌灰的工艺方法 |
CN115786694A (zh) * | 2023-01-29 | 2023-03-14 | 中南大学 | 锌铅铜矿料的预处理方法及其应用 |
Also Published As
Publication number | Publication date |
---|---|
WO2002033136A1 (fr) | 2002-04-25 |
AU2002210283A1 (en) | 2002-04-29 |
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